[PATCH 05/13] phy: qcom-qmp-usb: merge driver data

Johan Hovold
2022-10-24T10:07:18Z

The USB QMP PHY driver only manages a single PHY so merge the old
qcom_qmp and qmp_phy structures and drop the PHY array.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 239 ++++++++++--------------
1 file changed, 96 insertions(+), 143 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index f28883e0d21e..e009d63260e7 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1453,60 +1453,30 @@ struct qmp_phy_cfg {
unsigned int pcs_usb_offset;
};

-/**
- * struct qmp_phy - per-lane phy descriptor
- *
- * @phy: generic phy
- * @cfg: phy specific configuration
- * @serdes: iomapped memory space for phy's serdes (i.e. PLL)
- * @tx: iomapped memory space for lane's tx
- * @rx: iomapped memory space for lane's rx
- * @pcs: iomapped memory space for lane's pcs
- * @tx2: iomapped memory space for second lane's tx (in dual lane PHYs)
- * @rx2: iomapped memory space for second lane's rx (in dual lane PHYs)
- * @pcs_misc: iomapped memory space for lane's pcs_misc
- * @pcs_usb: iomapped memory space for lane's pcs_usb
- * @pipe_clk: pipe clock
- * @qmp: QMP phy to which this lane belongs
- * @mode: current PHY mode
- */
-struct qmp_phy {
- struct phy *phy;
+struct qmp_usb {
+ struct device *dev;
+
const struct qmp_phy_cfg *cfg;
+
void __iomem *serdes;
+ void __iomem *pcs;
+ void __iomem *pcs_misc;
+ void __iomem *pcs_usb;
void __iomem *tx;
void __iomem *rx;
- void __iomem *pcs;
void __iomem *tx2;
void __iomem *rx2;
- void __iomem *pcs_misc;
- void __iomem *pcs_usb;
- struct clk *pipe_clk;
- struct qcom_qmp *qmp;
- enum phy_mode mode;
-};

-/**
- * struct qcom_qmp - structure holding QMP phy block attributes
- *
- * @dev: device
- * @dp_com: iomapped memory space for phy's dp_com control block
- *
- * @clks: array of clocks required by phy
- * @resets: array of resets required by phy
- * @vregs: regulator supplies bulk data
- *
- * @phys: array of per-lane phy descriptors
- */
-struct qcom_qmp {
- struct device *dev;
void __iomem *dp_com;

+ struct clk *pipe_clk;
struct clk_bulk_data *clks;
struct reset_control_bulk_data *resets;
struct regulator_bulk_data *vregs;

- struct qmp_phy **phys;
+ enum phy_mode mode;
+
+ struct phy *phy;
};

static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
@@ -1976,10 +1946,10 @@ static void qmp_usb_configure(void __iomem *base,
qmp_usb_configure_lane(base, tbl, num, 0xff);
}

-static int qmp_usb_serdes_init(struct qmp_phy *qphy)
+static int qmp_usb_serdes_init(struct qmp_usb *qmp)
{
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *serdes = qphy->serdes;
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *serdes = qmp->serdes;
const struct qmp_phy_init_tbl *serdes_tbl = cfg->serdes_tbl;
int serdes_tbl_num = cfg->serdes_tbl_num;

@@ -1990,10 +1960,9 @@ static int qmp_usb_serdes_init(struct qmp_phy *qphy)

static int qmp_usb_init(struct phy *phy)
{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
- struct qcom_qmp *qmp = qphy->qmp;
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *pcs = qphy->pcs;
+ struct qmp_usb *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *pcs = qmp->pcs;
void __iomem *dp_com = qmp->dp_com;
int ret;

@@ -2056,9 +2025,8 @@ static int qmp_usb_init(struct phy *phy)

static int qmp_usb_exit(struct phy *phy)
{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
- struct qcom_qmp *qmp = qphy->qmp;
- const struct qmp_phy_cfg *cfg = qphy->cfg;
+ struct qmp_usb *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;

reset_control_bulk_assert(cfg->num_resets, qmp->resets);

@@ -2071,19 +2039,18 @@ static int qmp_usb_exit(struct phy *phy)

static int qmp_usb_power_on(struct phy *phy)
{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
- struct qcom_qmp *qmp = qphy->qmp;
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *tx = qphy->tx;
- void __iomem *rx = qphy->rx;
- void __iomem *pcs = qphy->pcs;
+ struct qmp_usb *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *tx = qmp->tx;
+ void __iomem *rx = qmp->rx;
+ void __iomem *pcs = qmp->pcs;
void __iomem *status;
unsigned int val;
int ret;

- qmp_usb_serdes_init(qphy);
+ qmp_usb_serdes_init(qmp);

- ret = clk_prepare_enable(qphy->pipe_clk);
+ ret = clk_prepare_enable(qmp->pipe_clk);
if (ret) {
dev_err(qmp->dev, "pipe_clk enable failed err=%d\n", ret);
return ret;
@@ -2093,12 +2060,12 @@ static int qmp_usb_power_on(struct phy *phy)
qmp_usb_configure_lane(tx, cfg->tx_tbl, cfg->tx_tbl_num, 1);

if (cfg->lanes >= 2)
- qmp_usb_configure_lane(qphy->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);
+ qmp_usb_configure_lane(qmp->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);

qmp_usb_configure_lane(rx, cfg->rx_tbl, cfg->rx_tbl_num, 1);

if (cfg->lanes >= 2)
- qmp_usb_configure_lane(qphy->rx2, cfg->rx_tbl, cfg->rx_tbl_num, 2);
+ qmp_usb_configure_lane(qmp->rx2, cfg->rx_tbl, cfg->rx_tbl_num, 2);

qmp_usb_configure(pcs, cfg->pcs_tbl, cfg->pcs_tbl_num);

@@ -2122,27 +2089,27 @@ static int qmp_usb_power_on(struct phy *phy)
return 0;

err_disable_pipe_clk:
- clk_disable_unprepare(qphy->pipe_clk);
+ clk_disable_unprepare(qmp->pipe_clk);

return ret;
}

static int qmp_usb_power_off(struct phy *phy)
{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
- const struct qmp_phy_cfg *cfg = qphy->cfg;
+ struct qmp_usb *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;

- clk_disable_unprepare(qphy->pipe_clk);
+ clk_disable_unprepare(qmp->pipe_clk);

/* PHY reset */
- qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
+ qphy_setbits(qmp->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);

/* stop SerDes and Phy-Coding-Sublayer */
- qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL],
+ qphy_clrbits(qmp->pcs, cfg->regs[QPHY_START_CTRL],
SERDES_START | PCS_START);

/* Put PHY into POWER DOWN state: active low */
- qphy_clrbits(qphy->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
+ qphy_clrbits(qmp->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
SW_PWRDN);

return 0;
@@ -2175,22 +2142,22 @@ static int qmp_usb_disable(struct phy *phy)

static int qmp_usb_set_mode(struct phy *phy, enum phy_mode mode, int submode)
{
- struct qmp_phy *qphy = phy_get_drvdata(phy);
+ struct qmp_usb *qmp = phy_get_drvdata(phy);

- qphy->mode = mode;
+ qmp->mode = mode;

return 0;
}

-static void qmp_usb_enable_autonomous_mode(struct qmp_phy *qphy)
+static void qmp_usb_enable_autonomous_mode(struct qmp_usb *qmp)
{
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *pcs_usb = qphy->pcs_usb ?: qphy->pcs;
- void __iomem *pcs_misc = qphy->pcs_misc;
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *pcs_usb = qmp->pcs_usb ?: qmp->pcs;
+ void __iomem *pcs_misc = qmp->pcs_misc;
u32 intr_mask;

- if (qphy->mode == PHY_MODE_USB_HOST_SS ||
- qphy->mode == PHY_MODE_USB_DEVICE_SS)
+ if (qmp->mode == PHY_MODE_USB_HOST_SS ||
+ qmp->mode == PHY_MODE_USB_DEVICE_SS)
intr_mask = ARCVR_DTCT_EN | ALFPS_DTCT_EN;
else
intr_mask = ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL;
@@ -2211,11 +2178,11 @@ static void qmp_usb_enable_autonomous_mode(struct qmp_phy *qphy)
qphy_clrbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN);
}

-static void qmp_usb_disable_autonomous_mode(struct qmp_phy *qphy)
+static void qmp_usb_disable_autonomous_mode(struct qmp_usb *qmp)
{
- const struct qmp_phy_cfg *cfg = qphy->cfg;
- void __iomem *pcs_usb = qphy->pcs_usb ?: qphy->pcs;
- void __iomem *pcs_misc = qphy->pcs_misc;
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *pcs_usb = qmp->pcs_usb ?: qmp->pcs;
+ void __iomem *pcs_misc = qmp->pcs_misc;

/* Disable i/o clamp_n on resume for normal mode */
if (pcs_misc)
@@ -2231,20 +2198,19 @@ static void qmp_usb_disable_autonomous_mode(struct qmp_phy *qphy)

static int __maybe_unused qmp_usb_runtime_suspend(struct device *dev)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- struct qmp_phy *qphy = qmp->phys[0];
- const struct qmp_phy_cfg *cfg = qphy->cfg;
+ struct qmp_usb *qmp = dev_get_drvdata(dev);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;

- dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qphy->mode);
+ dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qmp->mode);

- if (!qphy->phy->init_count) {
+ if (!qmp->phy->init_count) {
dev_vdbg(dev, "PHY not initialized, bailing out\n");
return 0;
}

- qmp_usb_enable_autonomous_mode(qphy);
+ qmp_usb_enable_autonomous_mode(qmp);

- clk_disable_unprepare(qphy->pipe_clk);
+ clk_disable_unprepare(qmp->pipe_clk);
clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);

return 0;
@@ -2252,14 +2218,13 @@ static int __maybe_unused qmp_usb_runtime_suspend(struct device *dev)

static int __maybe_unused qmp_usb_runtime_resume(struct device *dev)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
- struct qmp_phy *qphy = qmp->phys[0];
- const struct qmp_phy_cfg *cfg = qphy->cfg;
+ struct qmp_usb *qmp = dev_get_drvdata(dev);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
int ret = 0;

- dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qphy->mode);
+ dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qmp->mode);

- if (!qphy->phy->init_count) {
+ if (!qmp->phy->init_count) {
dev_vdbg(dev, "PHY not initialized, bailing out\n");
return 0;
}
@@ -2268,14 +2233,14 @@ static int __maybe_unused qmp_usb_runtime_resume(struct device *dev)
if (ret)
return ret;

- ret = clk_prepare_enable(qphy->pipe_clk);
+ ret = clk_prepare_enable(qmp->pipe_clk);
if (ret) {
dev_err(dev, "pipe_clk enable failed, err=%d\n", ret);
clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
return ret;
}

- qmp_usb_disable_autonomous_mode(qphy);
+ qmp_usb_disable_autonomous_mode(qmp);

return 0;
}
@@ -2287,7 +2252,7 @@ static const struct dev_pm_ops qmp_usb_pm_ops = {

static int qmp_usb_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_usb *qmp = dev_get_drvdata(dev);
int num = cfg->num_vregs;
int i;

@@ -2303,7 +2268,7 @@ static int qmp_usb_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)

static int qmp_usb_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_usb *qmp = dev_get_drvdata(dev);
int i;
int ret;

@@ -2324,7 +2289,7 @@ static int qmp_usb_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)

static int qmp_usb_clk_init(struct device *dev, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_usb *qmp = dev_get_drvdata(dev);
int num = cfg->num_clks;
int i;

@@ -2361,7 +2326,7 @@ static void phy_clk_release_provider(void *res)
* clk | +-------+ | +-----+
* +---------------+
*/
-static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
+static int phy_pipe_clk_register(struct qmp_usb *qmp, struct device_node *np)
{
struct clk_fixed_rate *fixed;
struct clk_init_data init = { };
@@ -2420,13 +2385,11 @@ static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np,
return devm_of_iomap(dev, np, index, NULL);
}

-static
-int qmp_usb_create(struct device *dev, struct device_node *np, int id,
+static int qmp_usb_create(struct device *dev, struct device_node *np,
void __iomem *serdes, const struct qmp_phy_cfg *cfg)
{
- struct qcom_qmp *qmp = dev_get_drvdata(dev);
+ struct qmp_usb *qmp = dev_get_drvdata(dev);
struct phy *generic_phy;
- struct qmp_phy *qphy;
bool exclusive = true;
int ret;

@@ -2439,81 +2402,75 @@ int qmp_usb_create(struct device *dev, struct device_node *np, int id,
if (of_device_is_compatible(dev->of_node, "qcom,sm8350-qmp-usb3-uni-phy"))
exclusive = false;

- qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
- if (!qphy)
- return -ENOMEM;
-
- qphy->cfg = cfg;
- qphy->serdes = serdes;
+ qmp->cfg = cfg;
+ qmp->serdes = serdes;
/*
* Get memory resources for the PHY:
* Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2.
* For dual lane PHYs: tx2 -> 3, rx2 -> 4, pcs_misc (optional) -> 5
* For single lane PHYs: pcs_misc (optional) -> 3.
*/
- qphy->tx = devm_of_iomap(dev, np, 0, NULL);
- if (IS_ERR(qphy->tx))
- return PTR_ERR(qphy->tx);
+ qmp->tx = devm_of_iomap(dev, np, 0, NULL);
+ if (IS_ERR(qmp->tx))
+ return PTR_ERR(qmp->tx);

- qphy->rx = devm_of_iomap(dev, np, 1, NULL);
- if (IS_ERR(qphy->rx))
- return PTR_ERR(qphy->rx);
+ qmp->rx = devm_of_iomap(dev, np, 1, NULL);
+ if (IS_ERR(qmp->rx))
+ return PTR_ERR(qmp->rx);

- qphy->pcs = qmp_usb_iomap(dev, np, 2, exclusive);
- if (IS_ERR(qphy->pcs))
- return PTR_ERR(qphy->pcs);
+ qmp->pcs = qmp_usb_iomap(dev, np, 2, exclusive);
+ if (IS_ERR(qmp->pcs))
+ return PTR_ERR(qmp->pcs);

if (cfg->pcs_usb_offset)
- qphy->pcs_usb = qphy->pcs + cfg->pcs_usb_offset;
+ qmp->pcs_usb = qmp->pcs + cfg->pcs_usb_offset;

if (cfg->lanes >= 2) {
- qphy->tx2 = devm_of_iomap(dev, np, 3, NULL);
- if (IS_ERR(qphy->tx2))
- return PTR_ERR(qphy->tx2);
+ qmp->tx2 = devm_of_iomap(dev, np, 3, NULL);
+ if (IS_ERR(qmp->tx2))
+ return PTR_ERR(qmp->tx2);

- qphy->rx2 = devm_of_iomap(dev, np, 4, NULL);
- if (IS_ERR(qphy->rx2))
- return PTR_ERR(qphy->rx2);
+ qmp->rx2 = devm_of_iomap(dev, np, 4, NULL);
+ if (IS_ERR(qmp->rx2))
+ return PTR_ERR(qmp->rx2);

- qphy->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
+ qmp->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
} else {
- qphy->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
+ qmp->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
}

- if (IS_ERR(qphy->pcs_misc)) {
+ if (IS_ERR(qmp->pcs_misc)) {
dev_vdbg(dev, "PHY pcs_misc-reg not used\n");
- qphy->pcs_misc = NULL;
+ qmp->pcs_misc = NULL;
}

- qphy->pipe_clk = devm_get_clk_from_child(dev, np, NULL);
- if (IS_ERR(qphy->pipe_clk)) {
- return dev_err_probe(dev, PTR_ERR(qphy->pipe_clk),
- "failed to get lane%d pipe clock\n", id);
+ qmp->pipe_clk = devm_get_clk_from_child(dev, np, NULL);
+ if (IS_ERR(qmp->pipe_clk)) {
+ return dev_err_probe(dev, PTR_ERR(qmp->pipe_clk),
+ "failed to get pipe clock\n");
}

generic_phy = devm_phy_create(dev, np, &qmp_usb_ops);
if (IS_ERR(generic_phy)) {
ret = PTR_ERR(generic_phy);
- dev_err(dev, "failed to create qphy %d\n", ret);
+ dev_err(dev, "failed to create PHY: %d\n", ret);
return ret;
}

- qphy->phy = generic_phy;
- qphy->qmp = qmp;
- qmp->phys[id] = qphy;
- phy_set_drvdata(generic_phy, qphy);
+ qmp->phy = generic_phy;
+ phy_set_drvdata(generic_phy, qmp);

return 0;
}

static int qmp_usb_probe(struct platform_device *pdev)
{
- struct qcom_qmp *qmp;
struct device *dev = &pdev->dev;
struct device_node *child;
struct phy_provider *phy_provider;
void __iomem *serdes;
const struct qmp_phy_cfg *cfg = NULL;
+ struct qmp_usb *qmp;
int num, id;
int ret;

@@ -2555,10 +2512,6 @@ static int qmp_usb_probe(struct platform_device *pdev)
if (num > 1)
return -EINVAL;

- qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL);
- if (!qmp->phys)
- return -ENOMEM;
-
pm_runtime_set_active(dev);
ret = devm_pm_runtime_enable(dev);
if (ret)
@@ -2572,7 +2525,7 @@ static int qmp_usb_probe(struct platform_device *pdev)
id = 0;
for_each_available_child_of_node(dev->of_node, child) {
/* Create per-lane phy */
- ret = qmp_usb_create(dev, child, id, serdes, cfg);
+ ret = qmp_usb_create(dev, child, serdes, cfg);
if (ret) {
dev_err(dev, "failed to create lane%d phy, %d\n",
id, ret);
--
2.37.3